Technical Note:
1.Ligand used for the Rh-catalyzed asymmetric hydrogenation of a-substituted acrylic acids.
2.Ligand for Rh-Catalyzed Enantioselective Hydrogenation of a-Oxy Functionalized a,?-L Jnsaturated Acids.
Reference:
1.Patent number US 8,106,227 B2.
2. Chem. Commun., 2016, 52, 2273-2276.